D25a —
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3
Eval: [+0.30]
Les coups candidats
Ambassadeurs : Stevic, Hrvoje (96x), Korchut, Adam (66x), Guliyev, Namig (59x), ? (58x), Estrada Nieto, Julian (57x), Kozul, Zdenko (51x), Ganguly, Surya Shekhar (51x), Ilyin, Pavel Egorovich (49x)
Ambassadeurs : Matulovic, Milan (57x), Romanishin, Oleg M (39x), Miles, Anthony J (36x), Fominyh, Alexander (31x), Kunin, Vitaly (29x), Grund, Holger (26x), Jobava, Baadur (20x), Ghitescu, Theodor (19x)
Ambassadeurs : Korbut, Ekaterina (30x), Karpatchev, Aleksandr (28x), Godena, Michele (28x), Tazbir, Marcin (27x), Wahjuwidajat, Utut Adianto (24x), Volodarsky, Yury Aleksandrovich (17x), Grabarczyk, Miroslaw (13x), Mayer, Istvan (13x)
Ambassadeurs : Vasquez Anabalon, Fernando (19x), Najer, Evgeniy (17x), Gheorghiu, Florin (11x), Epishin, Vladimir (11x), Rossetto, Hector (10x), Karpeshov, Oleg (8x), Barua, Dibyendu (7x), Plater, Kazimierz (6x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…e6 4…Bg4 4…a6 4…g6
<1800 561 56% 13% 6% 2%
1800-2200 6641 64% 17% 7% 2%
2200-2600 14668 68% 17% 7% 2%
2600+ 901 81% 8% 3% 1%
Évolution par décennie (% des parties)
Décennie N parties 4…e6 4…Bg4 4…a6 4…g6
1870s 1 100%
1880s 1 100%
1890s 12 67%
1900s 22 45% 9% 9% 5%
1910s 23 39% 13% 22%
1920s 26 62% 4%
1930s 147 61% 1% 6%
1940s 142 68% 1% 14% 3%
1950s 385 48% 4% 9% 26%
1960s 979 46% 39% 2% 8%
1970s 705 46% 40% 2% 7%
1980s 1353 58% 25% 6% 6%
1990s 3867 65% 18% 5% 3%
2000s 8178 69% 14% 6% 3%
2010s 8801 62% 17% 7% 2%
2020s 3364 72% 13% 8% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…e6 62% 72% ▲ +10.0%
4…Bg4 17% 13% ▼ -3.9%
4…a6 7% 8% ▲ +0.5%
4…g6 2% 1% ▼ -1.2%
Joueurs célèbres
Champions du monde dans cette position
Alekhine, Alexander — 10 parties
Botvinnik, Mikhail — 10 parties
Euwe, Max — 10 parties
Smyslov, Vladimir — 10 parties
Tal, Mikhail — 10 parties
Anand, Viswanathan — 10 parties
Karpov, Anatoly — 10 parties
Kramnik, Vladimir — 10 parties
Ju, Wenjun — 7 parties
Lasker, Emanuel — 6 parties
Gukesh D — 6 parties
Ding, Liren — 5 parties
Karpov, Aleksandr — 4 parties
Kasparov, Garry — 4 parties
Carlsen, Magnus — 3 parties
Steinitz, Wilhelm — 1 partie
Parties historiques
4…e6 — 64.4% (18049 parties)
1890 — Steinitz, Wilhelm vs Gunsberg, Isidor — 1-0 — New York, NY USA
1895 — Teichmann, Richard vs Blackburne, Joseph — 0-1 — Hastings ENG
1895 — Burn, Amos vs Mieses, Jacques — 1-0 — Hastings ENG
1895 — Lasker, Emanuel vs Teichmann, Richard — 1-0 — Hastings ENG
1895 — Tarrasch, Siegbert vs Mieses, Jacques — 1/2-1/2 — ?
4…Bg4 — 17.3% (4841 parties)
1878 — Blackburne, Joseph vs Clerc, Albert — 1-0 — Paris FRA
1883 — Lynam, Charles Cotterill vs Gwinner, Herman George — 1-0 — St Georges CC
1900 — Lebedev, Sergey vs Tolstoy, Count — 0-1 — Correspondence game
1906 — Atkins, Henry Ernest vs Brown, Frank — 1-0 — Shrewsbury
1913 — Chajes, Oscar vs Janowski, Dawid — 0-1 — New York, NY USA
4…a6 — 6.3% (1763 parties)
1907 — Reti, Richard vs Steiner, Bernhard — 0-1 — Szekesfehervar
1908 — Rubinstein, Akiba vs Teichmann, Richard — 1-0 — Vienna AUT
1913 — Kupchik, Abraham vs Capablanca, Jose — 0-1 — New York, NY USA
1916 — Showalter, Jackson vs Janowski, Dawid — 1/2-1/2 — Lexington, KY USA
1916 — Jaffe, Charles vs Janowski, Dawid — 1/2-1/2 — New York, NY USA
4…g6 — 2.9% (826 parties)
1908 — Rubinstein, Akiba vs Suechting, Hugo — 1/2-1/2 — Prague CZE
1941 — Guimard, Carlos E vs Salas Romo, Julio — 1-0 — Sao Paulo BRA
1941 — Guimard, Carlos E vs Acevedo Salas, Miguel — 1-0 — Sao Paolo
1947 — Fine, Reuben vs Horowitz, Albert Israel — 1/2-1/2 — Los Angeles, CA USA
1949 — Wood, Gabriel vs Pratten, W — 1-0 — Southsea